Whirlpool bathtub



FIG. 1 is a perspective view of a whirlpool bathtub showing my design.

FIG. 2 is a top plan view thereof;

FIG. 3 is an elevational view taken from one side thereof, the opposite side being the same as the side shown; and

FIG. 4 is a cross sectional view taken on line 4--4 of FIG. 2. 

The ornamental design for a whirlpool bathtub, as shown and described. 